Container reach stacker boom
By adjusting the position of the boom and counterweight by driving the threaded rod with a motor, the problem of container center of gravity shift is solved, the force balance of the boom is achieved, the service life is extended and the fuel consumption is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN WEILONG MACHINERY MFG
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-31
AI Technical Summary
When using the boom of a container front-end crane, uneven distribution of cargo inside the container can cause the center of gravity to shift, resulting in the spreader tilting and reducing the boom's lifespan.
The motor drives the threaded rod to move the lugs and insert blocks, adjusting the position of the counterweight and boom to achieve force balance at both ends of the crane boom, thus avoiding the use of counterweights that could affect the operator's operation.
This achieves force balance at both ends of the boom, extends boom lifespan, reduces fuel consumption, and improves operational flexibility.
Smart Images
Figure CN224577924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane boom technology, specifically to the boom of a container front lifting machine. Background Technology
[0002] The crane boom is the core working component of a crane or lifting equipment. It refers to the cantilever structure extending from the slewing platform or base, used to support loads, transmit power, and achieve the lifting and displacement of goods by changing its length or angle. In container front-load cranes, the boom is the key actuator for completing the grabbing, stacking, and transfer of containers.
[0003] When using a crane, if the weight of the cargo inside a container is uneven, it will cause the container's center of gravity to shift, resulting in a tilting force on the spreader. Prolonged lifting of containers with a shifted center of gravity will cause wear and tear on the crane boom, reducing its service life. Utility Model Content
[0004] The purpose of this invention is to provide a container front-end crane boom to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a container front crane boom, including a boom and a counterweight. A first connecting frame is fixedly connected to the upper side of the boom. A first motor is fixedly connected to one side of the first connecting frame. The power end of the first motor penetrates the first connecting frame and is fixedly connected to a first threaded rod. The other end of the first threaded rod is rotatably connected to the other side of the first connecting frame. A first sliding rod is fixedly connected inside the first connecting frame. A lug is slidably connected to the outer side of the first sliding rod. A lug is threadedly connected to the outer side of the first threaded rod. A movable box is fixedly connected between the lugs on both sides. A curved frame is fixedly connected to both sides of the upper part of the movable box. The upper part of the curved frame and both sides of the counterweight have matching mounting holes.
[0006] Preferably, a third motor is fixedly connected to the upper part of the movable box, and a third threaded rod is fixedly connected to the power end of the third motor through the movable box. The lower part of the third threaded rod is rotatably connected to the lower interior of the movable box. A first movable plate is threadedly connected to the outer side of the third threaded rod. Several sets of first locking rods are fixedly connected to the lower part of the first movable plate. The first locking rods are slidably connected to the lower interior of the movable box. Several sets of first locking holes that cooperate with the first locking rods are opened on the upper side of the boom.
[0007] Preferably, a blocking rod is slidably connected inside the first locking hole, and a lifting plate is fixedly connected to the lower part of the two sets of blocking rods. A spring is fixedly connected between the lifting plate and the inside of the boom, and the spring is sleeved on the outside of the blocking rod.
[0008] Preferably, a second connecting frame is fixedly connected to both the front and rear sides of the boom, a third connecting frame is fixedly connected to one side of the second connecting frame, a second motor is fixedly connected inside the third connecting frame, the power end of the second motor penetrates the second connecting frame and is fixedly connected to a second threaded rod, the other end of the second threaded rod is rotatably connected to the inner wall of the other side of the second connecting frame, an embedded block is threadedly connected to the outer side of the second threaded rod, a second sliding rod is slidably connected to the lower inner side of the embedded block, both sides of the second sliding rod are fixedly connected to the inner wall of the second connecting frame, a main beam is fixedly connected to the outer side of the embedded block, and an installation plate is fixedly connected to the upper part of the main beam.
[0009] Preferably, an isolation plate is fixedly connected to the inner side of the embedded block, a fourth motor is fixedly connected to one side of the isolation plate, a fourth threaded rod is fixedly connected to the power end of the fourth motor through the isolation plate, the fourth threaded rod is rotatably connected to the inside of the embedded block, a second moving plate is threadedly connected to the outer side of the fourth threaded rod, a second locking rod is fixedly connected to both sides of the second moving plate, the second locking rod is slidably connected to the inside of the embedded block, and several sets of second locking holes that cooperate with the second locking rod are opened on the front and rear sides of the boom.
[0010] Preferably, the first connecting frame has a first connecting groove on both sides, and the second connecting frame has a second connecting groove at the bottom.
[0011] Preferably, hooks are provided on both sides of the upper part of the counterweight.
[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a first motor to drive a first threaded rod, which in turn moves the lug along the first sliding rod, thereby changing the position of the moving box. The counterweight is installed on the bent frame through the mounting hole. By adjusting the position of the counterweight, the forces at both ends of the crane boom are balanced, and the container is in the middle without affecting the driver's normal operation. 2. This utility model also changes the relative position between the boom and the main beam by removing the counterweight, driving the second threaded rod with the second motor, and moving the embedded block along the second sliding rod. This allows the forces on both sides of the crane boom to be balanced by adjusting the position of the container, thus reducing the crane's fuel consumption by eliminating the need for a counterweight. Attached Figure Description
[0013] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a second-view three-dimensional structural cross-sectional view of the present invention; Figure 3 This is a magnified view of a partial structure of the present invention from a third-view perspective; Figure 4 This is a magnified view of a partial structure of the present invention from a fourth perspective; Figure 5 This is an enlarged view of the fifth-angle motor structure of this utility model.
[0014] In the diagram: 1. Boom; 2. First connecting frame; 3. First motor; 4. First threaded rod; 5. First sliding rod; 6. Connector; 7. Moving box; 8. Bent frame; 9. Counterweight; 10. Mounting hole; 11. Third motor; 12. Third threaded rod; 13. First moving plate; 14. First locking rod; 15. First locking hole; 16. Blocking rod; 17. Lifting plate; 18. Spring; 19. Hook; 20. Second connecting frame; 21. Embedded block; 22. Third connecting frame; 23. Second motor; 24. Second threaded rod; 25. Second sliding rod; 26. Isolation plate; 27. Fourth motor; 28. Fourth threaded rod; 29. Second moving plate; 30. Second locking rod; 31. Second locking hole; 32. First connecting groove; 33. Second connecting groove; 34. Main beam; 35. Mounting plate. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Please see Figure 1-5 This utility model provides a technical solution: a container front hoist boom, including boom 1 and counterweight 9. A first connecting frame 2 is fixedly welded to the upper side of boom 1. A first motor 3 is installed on a flange on one side of the first connecting frame 2. The power end of the first motor 3 passes through the coupling of the first connecting frame 2 and is connected to a first threaded rod 4. The other end of the first threaded rod 4 is rotatably connected to the other side of the first connecting frame 2. A first sliding rod 5 is fixedly welded inside the first connecting frame 2. A side lug 6 is slidably installed on the outside of the first sliding rod 5. A side lug 6 is threadedly installed on the outside of the first threaded rod 4. A movable box 7 is fixedly welded between the two lugs 6. A bent frame 8 is fixedly welded to the upper two sides of the movable box 7. The upper part of the bent frame 8 and the two sides of the counterweight 9 are provided with matching mounting holes 10. The first motor 3 drives the first threaded rod 4, which drives the lug 6 to move along the first sliding rod 5, thereby changing the position of the movable box 7. The counterweight 9 is installed on the bent frame 8 through the mounting holes 10, thereby adjusting the position of the counterweight 9 and enabling the counterweight 9 to be disassembled and assembled as needed. A third motor 11 is installed on the upper flange of the movable box 7. The power end of the third motor 11 passes through the coupling of the movable box 7 and is connected to a third threaded rod 12. The lower part of the third threaded rod 12 is rotatably connected to the lower interior of the movable box 7. A first movable plate 13 is threaded on the outer side of the third threaded rod 12. Several sets of first locking rods 14 are fixedly welded to the lower part of the first movable plate 13. The first locking rods 14 are slidably installed inside the lower interior of the movable box 7. Several sets of first locking holes 15 that cooperate with the first locking rods 14 are opened on the upper side of the boom 1. The third motor 11 drives the third threaded rod 12, which drives the first movable plate 13 to move downward, so that the first locking rods 14 are inserted into the first locking holes 15. The distance between the first locking holes 15 is small enough to improve the sensitivity of position adjustment and lock the position of the movable box 7. A blocking rod 16 is slidably installed inside the first locking hole 15. A lifting plate 17 is fixedly welded to the lower part of the front and rear sets of blocking rods 16. A spring 18 is fixedly welded between the lifting plate 17 and the inside of the boom 1. The spring 18 is sleeved on the outside of the blocking rod 16. When the spring 18 is in a normal extension and retraction state, it drives the blocking rod 16 to block the first locking hole 15 through the lifting plate 17, preventing impurities from entering the first locking hole 15. The boom 1 is fixedly welded with a second connecting frame 20 on both the front and rear sides. A third connecting frame 22 is fixedly welded to one side of the second connecting frame 20. A second motor 23 is installed in the flange inside the third connecting frame 22. The power end of the second motor 23 passes through the coupling of the second connecting frame 20 and is connected to a second threaded rod 24. The other end of the second threaded rod 24 is rotatably connected to the inner wall of the other side of the second connecting frame 20. An embedded block 21 is threaded on the outer side of the second threaded rod 24. A second sliding rod 25 is slidably installed on the lower inner side of the embedded block 21. The two sides of the second sliding rod 25 are fixedly welded to the inner wall of the second connecting frame 20. A main beam 34 is fixedly welded to the outer side of the embedded block 21. An installation plate 35 is threaded on the upper part of the main beam 34. The installation plate 35 is connected to the boom of the crane. The second motor 23 drives the second threaded rod 24, which causes the embedded block 21 to move along the second sliding rod 25, thereby changing the relative position between the boom 1 and the main beam 34. An isolation plate 26 is fixedly welded to the inner side of the embedded block 21. A fourth motor 27 is installed on a flange on one side of the isolation plate 26. The power end of the fourth motor 27 passes through the isolation plate 26 and is connected to a fourth threaded rod 28 via a coupling. The fourth threaded rod 28 is rotatably connected to the inside of the embedded block 21. A second moving plate 29 is threadedly installed on the outer side of the fourth threaded rod 28. A second locking rod 30 is fixedly welded to both sides of the second moving plate 29. The second locking rod 30 is slidably installed inside the embedded block 21. Several sets of second locking holes 31 are opened on the front and rear sides of the boom 1 to cooperate with the second locking rod 30. The fourth motor 27 drives the fourth threaded rod 28, so that the second moving plate 29 drives the second locking rod 30 to be inserted into the second locking hole 31. The distance between the second locking holes 31 is small enough to improve the sensitivity of position movement and fix the relative position between the boom 1 and the main beam 34. The first connecting frame 2 has first connecting grooves 32 on both sides. Impurities that are brought into the first connecting frame 2 are pushed out through the moving box 7 along the first connecting grooves 32 on both sides to prevent the accumulation of impurities from affecting the movement of the moving box 7. The second connecting frame 20 has a second connecting groove 33 at the bottom. Impurities that fall into the second connecting frame 20 fall directly through the second connecting groove 33 to prevent the accumulation of impurities from affecting the movement of the embedded block 21. Hooks 19 are provided on both sides of the upper part of the counterweight 9 to facilitate the removal of the counterweight 9.
[0017] Working principle: When in use, the container is lifted by the boom 1. When the center of gravity of the container is unbalanced, the first motor 3 drives the first threaded rod 4, which drives the lug 6 to move along the first sliding rod 5, thereby changing the position of the moving box 7. The counterweight 9 is installed on the bent frame 8 through the mounting hole 10, thereby adjusting the position of the counterweight 9, so as to achieve force balance at both ends of the crane boom, and the container is in the middle without affecting the normal operation of the driver. By removing the counterweight 9, the second motor 23 drives the second threaded rod 24, which in turn moves the embedded block 21 along the second sliding rod 25, thereby changing the relative position between the boom 1 and the main beam 34. This allows the crane boom to be balanced on both sides by adjusting the position of the container, thus reducing the crane's fuel consumption by not using the counterweight 9.
[0018] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A container reach stacker boom comprising a boom (1), a counterweight (9), characterised in that: The upper side of the boom (1) is fixedly connected to a first connecting frame (2), and a first motor (3) is fixedly connected to one side of the first connecting frame (2). The power end of the first motor (3) passes through the first connecting frame (2) and is fixedly connected to a first threaded rod (4). The other end of the first threaded rod (4) is rotatably connected to the other side of the first connecting frame (2). A first sliding rod (5) is fixedly connected inside the first connecting frame (2). A side lug (6) is slidably connected to the outside of the first sliding rod (5). A side lug (6) is threadedly connected to the outside of the first threaded rod (4). A movable box (7) is fixedly connected between the two lugs (6). A bent frame (8) is fixedly connected to both sides of the upper part of the movable box (7). The upper part of the bent frame (8) and the two sides of the counterweight (9) are provided with matching mounting holes (10).
2. The container reach stacker boom of claim 1, wherein: The upper part of the movable box (7) is fixedly connected to a third motor (11). The power end of the third motor (11) penetrates the movable box (7) and is fixedly connected to a third threaded rod (12). The lower part of the third threaded rod (12) is rotatably connected to the lower side of the movable box (7). The outer side of the third threaded rod (12) is threadedly connected to a first movable plate (13). The lower part of the first movable plate (13) is fixedly connected to several sets of first locking rods (14). The first locking rods (14) are slidably connected to the lower side of the movable box (7). The upper side of the boom (1) is provided with several sets of first locking holes (15) that cooperate with the first locking rods (14).
3. The container reach stacker boom of claim 1, wherein: A blocking rod (16) is slidably connected inside the first locking hole (15). A lifting plate (17) is fixedly connected to the lower part of the two sets of blocking rods (16). A spring (18) is fixedly connected between the lifting plate (17) and the inside of the boom (1). The spring (18) is sleeved on the outside of the blocking rod (16).
4. The container reach stacker boom of claim 1, wherein: The boom (1) is fixedly connected to the front and rear sides with a second connecting frame (20). The second connecting frame (20) is fixedly connected to one side with a third connecting frame (22). The third connecting frame (22) is fixedly connected to a second motor (23). The power end of the second motor (23) penetrates the second connecting frame (20) and is fixedly connected to a second threaded rod (24). The other end of the second threaded rod (24) is rotatably connected to the inner wall of the other side of the second connecting frame (20). The outer side of the second threaded rod (24) is threadedly connected to an embedded block (21). The lower inner side of the embedded block (21) is slidably connected to a second sliding rod (25). The two sides of the second sliding rod (25) are fixedly connected to the inner wall of the second connecting frame (20). The outer side of the embedded block (21) is fixedly connected to a main beam (34). The upper part of the main beam (34) is fixedly connected to an installation plate (35).
5. A container reach stacker boom as claimed in claim 4 wherein: An isolation plate (26) is fixedly connected to the inner side of the embedded block (21). A fourth motor (27) is fixedly connected to one side of the isolation plate (26). The power end of the fourth motor (27) penetrates the isolation plate (26) and is fixedly connected to a fourth threaded rod (28). The fourth threaded rod (28) is rotatably connected to the inside of the embedded block (21). A second moving plate (29) is threadedly connected to the outside of the fourth threaded rod (28). A second locking rod (30) is fixedly connected to both sides of the second moving plate (29). The second locking rod (30) is slidably connected to the inside of the embedded block (21). Several sets of second locking holes (31) that cooperate with the second locking rod (30) are opened on the front and rear sides of the boom (1).
6. The container reach stacker boom of claim 4, wherein: The first connecting frame (2) has a first connecting groove (32) on both sides, and the second connecting frame (20) has a second connecting groove (33) at the bottom.
7. The container reach stacker boom of claim 1, wherein: Hooks (19) are provided on both sides of the upper part of the counterweight (9).